Dépôt sous vide PVD/PACVD

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Vacuum deposition - PVD/PACVD

Physical vapour deposition and plasma-assisted chemical vapour deposition (PVD and PACVD) are environmentally-friendly vacuum deposition technologies involving a deposition of material on the surface of the parts to be treated.

They make it possible to obtain coatings having:

thicknesses which can vary from several nanometres to several tens of microns

hardnesses ranging from 1,000 to 4,000 HV

Depending on the coating chosen, they thus give the parts treated:

Tribological properties: very low coefficient of friction

Mechanical properties: very high hardness

Electromagnetic shielding properties

Optical properties

Electrical conductivity properties

Antibacterial properties

Decorative properties

…

This process is implemented in a vacuum vessel in which a plasma is created.

PEMS® permits the production of very dense layers for tribological use. This process is more particularly used by HEF for the production of its low coefficient of friction hard or extra-hard layers. Moreover, PEMS® makes it possible to modify the hardness, the density and resistance of deposits to suit the application.

CAM®:

At the cutting edge of vacuum technology, CAM® constitutes a genuine evolution, permitting the deposition of hard and very low coefficient of friction coatings at an extremely low temperature.

M-ARC®:

This method is an evolution of the usual arc evaporation technique. It considerably reduces the droplets generally associated with this type of coating.

In a strong position because of this control of processes, the HEF Group has developed a series of coatings which cover a very wide area of thin layer applications:

Reduction of friction and wear: CERTESS™ CARBON

Increase in the lifetime of mechanical parts: CERTESS™ NITRO

Electromagnetic shielding on polymers: PROCEM™

Aluminium alloy corrosion protection: CORRALU™ V

Erosion protection: CERTESS™ BLAST

Other surface properties: optical application, decorative application, more particularly on large parts